Fire extinguisher



Feb. 6, 1951 G. OKSAS 2,540,544

FIRE EXTINGUISHER Filed Dec. 6, 1946 2 Sheets-Sheet l oooooooooooooomoooooooooooooool oooooooooooooo ooooooeooooooo INVENTOR. lC05 /m/'r 6iOKSUS Feb. 6, 1951 Q G, oKsAs 2,540,544

FIRE EXTINGUISHER 2 Sheets-Sheet 2 Filed Deo. 6, 1946 INVENTOR. Cds//77//- 6. O/fsas A for/@ys Patented Feb.l 6, 19,51

UNITED STATES PATENT OFFICE 'l V2,540,544 v FIRE Ex'rINGUIsriER yCasimiro. oksas, Troy, N. Y. Application December 6, 1946, Serial No. 714,440

Y f 4 Claims.

This inventionrelates to a new and improved re extinguisher of which thefollowing is a specificationf The primary object of this inventionresides in the provision of a new and improved portable re extinguisherwhich may be quickly and easily recharged from without the container ofsaid extinguisher to place the extinguisher in a safe usable condition.

AnotherA object of this invention resides in the provision of a new andimproved carbon dioxide (CO2) fire extinguisher which is quickly andeasily portable to the scene of a re, and quickly and easily operatedfor the purpose of extinguishing the fire.

Still another object of this invention is the provision of such anextinguisher which may be quickly and easily recharged as describedsafely and properly by a novice who merely follows the instructions ofthe required steps oi first discharging the container through provideddischarge means prior torellling the extinguisher with its chargingelements.

Still another object of this invention is the provision of a fireextinguisher of the character described which requires only the placingof Dry Ice in a provided housing therein, available from without thecontainer, where the Dry Ice sublimates to form a high pressure CO2 gascontent within the extinguisher casing adapted for` use for'extinguishing lires in the conventional manner.

Still a further improvement and advantage of this invention is theprovision of such a flre extinguisher which is of extremely simple andinexpensive design, and which is readily available for use to thegeneral public on an extremely economic, safe, and reliable basis.

Further improvements and advantages of this invention will readilyappear to those skilled in the art when the following ydescription isread in the light of the accompanying drawings in which:

Fig. 1 is a vertical cross section of a side elevation of theextinguisher.

Fig. 2 is a vertical cross section taken on line 2-2 of Fig. 1.

Fig. 3 is a vertical cross section taken on line 3 3 of Fig. 1.

Fig. 4 is a side elevation taken on line 4-4 of Fig. 1.

Fig. 5 is an enlarged view of the casing joint.

Referring now to the accompanying drawings which illustrate thepreferred embodiment of this invention and in which like numeralsindicate similar parts throughout, A designates a cylindrical housing orcontainer composed of two separate sections the bottom half I and thetop section 2 which is secured lto the section IY by an interlockingjoint 3, as illustrated in Fig. 5, comprising triangular shaped tongue 4freely inset into a triangular cut groove 5, and a completey lininglayer of an adhesive glue 6 or the like retaining said tongue and groovein their interlocked position. Thus an air tight casing A is Y formed tohouse the gaseous lire extinguisher.

A rectangular opening 'I is provided at one point in the circumferenceof the lower section I and a box-like member 8 is projected horizontallyinward said casing being secured to an inwardly projected flange 9 aboutthe opening I by means of a dove-tail IIJ lor the like.

A rectangular opening II is provided in the bottom of the box-likemember 8 adjacent the casing opening 'i to open downward into a receptacle I2 which rests adjacent the` casing and is positioned by araised flange I3 on the cas' ing bottom. This housing is provided on itsthree exposed walls with a patterned plurality'of apertures I4 openinginto the interior of the casing.

A rectangular plate or cover I5 with projected perpendicular sides I6 isslidably mounted within the box-like member to and away from the casingopening selectively ,making available the opening tothe housing I2. Ahandle I1 is provided on the outer face of theplate I2 to facilitate theinward and outward movement thereof, and a sealing material I8 isprovided about the edge of 'said plate so as to contact the edge of saidopening to retain an air-tight joint,

It` will be. noted that the box-like member is provided with stops at26, 26 engageable with the cover. The stops limit the movement of the Yrectangular plate or cover I5 so that when the cover is out of sealingcontact with said container opening, the cover blocks access to theinterior of said container I. It is thus impossible to insert an excessof the solid gasiable material in the container since the amountinserted is limited by the size of open top receptacle I2.-

Thiswill prevent overloading of the fire extinguisher and consequentlykeep the gas pressure within safe limits and reduce the danger ofVbursting of the container.

The arrangement as described provides for the inward movement of theclosurefplate I5 to permit the deposit of Dry Ice in the housing I2, andthe plate is then returned to a sealing position against the casingwall. The Dry Ice then sublimates filling the casing with CO2 gas andcausing a pressure increase with the sublimation which forces the platel5 against the casing hermetically sealing the joint and providingsufcient pressure for a rapid and complete clischarge of the CO2 fromthe casing by the construction now to be described.

The center of the top of the top section 2 is provided with anintegrally formed throat 2l! which projects outwardly from the top whereit expands to form a nozzle 2l. The throat 20 provides an outlet for thegas. A tapered rotary plug valve 22 is mounted in the throat 2S and isprovided on one projected end without the throat with a spring washer 23which provides for the secure positioning of the valve, the secondextended end being provided with a wing handle 24 which is mountedadjacent a right angular stop 25 which limits the valve rotation t0 90degrees providing for the positive opening and closing of the valve forpermitting the emission of the CO2 gas through the nozzle 2| and thepositive stoppage thereof.

Thus it may be seen that .9, new and improved easily recharged reextinguisher has been provided which is durable, safe, and simplyconstructed.

t may also be seen that it is necessary to safely eliminate any possiblegas in the casing before opening the casing for addition of dry ice.

Having thus described and explained the function and construction ofthis invention and with full belief that modincations in size, shape andgeneral characteristics would not constitute departure from the spiritof this invention what I desire to claim is:

l. In a fire extinguisher having a gas tight casing, the improvement ofmeans for introducu ing solid gasiable material into the interior of thecasing comprising a nlling opening formed in a wall of said casing, acover positioned within said casing for fitting said filling opening,guide means mounting said cover for movement toward and away from saidcasing wall into and out oi' closing relation to said filling opening,said cover in open position enabling introducing solid gasifiablematerial through said opening into the interior of said casing to gasiiytherein so as to exert suicient pressure within said casing when saidcover is in closed position to main- Y tain said cover in gas tightclosing relation to said lling opening, said guide means comprising abox-like form projecting radially inwardly from the casing wall andsurrounding said liing opening, said box-like form having a side openingcommunicating with the interior of said casing through which solidgasiiiable material can be passed into the interior of said casingthrough said iling opening, said cover comprising a plate extendingacross the interior of said box-like forni having a peripheral iiangeslidably engaging the interior o said box-like form, said flange beingarranged to close said side opening in said box-like form while saidcover is in closed position and to uncover said side opening in the openposition of said cover.

2. In a re extinguisher having a gas tight casing, the improvement ofmeans for introducing solid gasiable material and positioning the samewithin the interior of said casing comprising la, iilling opening formedin a wall of said casing, guide means comprising a box-like form open toand registered with said lling opening, a perforated container Withinsaid casing adjacent to said box-like form, said box-like form beingprovided with an opening providing access through said box-like form tothe interior of said perforated container, and a cover for said fillingopening slidably confined in said box-like form for inward movement froma closed position within said lling opening to an open position inwardlybeyond said access opening whereby solid gasiable material can beintroduced into said perforated container only while said cover is inopen position.

3. A ire extinguisher comprising a container having an outlet in oneend, there being an opening extending through a side of said containerintermediate the ends thereof for the introduction therethrough of asolid gasiiiable material, a cover positioned within said containeradjacent to said container opening and mounted in said container formovement into and out of sealing contact with said opening, and an opentop receptacle positioned within said container and below said openingin said container and xedly positioned in the latter for receiving thesolid gasiable material introduced through said container opening.

4. A fire extinguisher comprising a container having an outlet in oneend, there being an opening extending through a side of said containerintermediate the ends thereof for the introduction therethrough of asolid gasifiable material, a transversely disposed slideway positionedin said container and having one end surrounding said container opening,a cover arranged longitudinally of said slideway and mounted in saidslideway for movement into and out of sealing engagement with saidopening, means on the other end of said slideway and engageable withsaid cover when the latter is in its position of movement out of sealingcontact with said container opening to thereby block access to theinterior of said container, and an open top receptacle positioned withinsaid container and below said opening in said container and xedlypositioned in the latter for receiving thev solid gasiiable materialintroduced through said container opening.

CASIMIR G. OKSAS.

REFERENCES CITED The following references are of record in the ile ofthis patent:

UNITED STATES PATENTS Number Name Date 1,887,020 Hassensall Nov. 8, 19321,957,640 Grison K May 8, 1934 2,412,434 Thompson Dec. 10, 1946

